Potential Probes

Published: March 26, 2019 | Last updated: July 5, 2023

What Does Potential Probes Mean?

Potential probes are rod-like instruments that are inserted into the earth for the purpose of testing the resistivity of soil. A soil resistivity test is conducted in order to test the ability of the soil to resist the flow of electricity. This test is important in trenchless technology in different ways such as ore location, depth of bedrock, ascertaining geological characteristics and also for determining the impact of corrosion in buried pipelines.


Trenchlesspedia Explains Potential Probes

Potential probes are part of the Wenner 4-point test method which consists of four spikes or probes driven into the ground. The probes are arranged in a straight line and spaced at equal distance from each other. The two probes placed in the middle of the arrangement are known as the potential probes and the potential difference is measured between these two probes by passing current between the electrodes or current probes placed at either end of the arrangement. The potential difference is measured by a voltmeter.


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